Traffic sign



FIG. 1 is a front view of a traffic sign showing my new design the backview thereof being a mirror image and, therefore, not shown;

FIG. 2 is a side view thereof the opposite side view thereof being amirror image and, therefore, not shown;

FIG. 3 is a top view thereof; and,

FIG. 4 is a bottom view thereof.

The ornamental design for traffic sign, as shown and described.